File format or extension invalid PHPExcel - php

Question

I try to use PHPExcel library for my report, this is my first time i use PHPExcel ,but error dialog appear telling that file format / extension invalid ,this is the syntax :
include '../_class/PHPExcel.php';
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
->setLastModifiedBy("Rizal")
->setTitle("Laporan Anggota")
->setSubject("anggota")
->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");
// Create the worksheet
$objPHPExcel->setActiveSheetIndex(0);
$objPHPExcel->getActiveSheet()->setCellValue('A7', "No")
->setCellValue('B7', "NIS")
->setCellValue('C7', "NISN")
->setCellValue('D7', "Name")
->setCellValue('E7', "J.K")
->setCellValue('F7', "Birth")
->setCellValue('G7', "Address")
->setCellValue('H7', "Job")
// Redirect output to a client’s web browser (Excel2007)
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="Test.xlsx"');
header('Cache-Control: max-age=0');
anyone can help me to solve it?

Answer 1

Try this example
<?php
$name = rand('0','10000').'.xlsx';
$n = rand('0','100');
error_reporting(E_ALL);
include 'PHPExcel/Classes/PHPExcel.php';
include 'PHPExcel/Classes/PHPExcel/Writer/Excel2007.php';
$o = new PHPExcel();
$o->getProperties()->setCreator('Creator');
$o->getProperties()->setLastModifiedBy('Last Modified');
$o->getProperties()->setTitle("Office 2007 XLSX Document ");
$o->getProperties()->setSubject('Subject');
$o->getProperties()->setDescription("Office 2007 XLSX, generated using PHP classes.");
$o->setActiveSheetIndex(0);
$o->getActiveSheet()->SetCellValue('A1', 'Name');
$o->getActiveSheet()->SetCellValue('B1', 'Rating');
$o->getActiveSheet()->SetCellValue('A2', 'Shawshank Redemption');
$o->getActiveSheet()->SetCellValue('B2', $n);
$o->getActiveSheet()->SetCellValue('A3', 'A Clockwork Orange');
$o->getActiveSheet()->SetCellValue('B3', $n);
$o->getActiveSheet()->setTitle('Films');
$objWriter = new PHPExcel_Writer_Excel2007($o);
$objWriter->save('excel/'.$name); // exce/ = filepath
?>
I think the problem you are having relates to the $objWriter variable.